Your company has just acquired another company, and you have been asked to integrate their existing Google Cloud environment into your company's data center.
Upon investigation, you discover that some of the RFC 1918 IP ranges being used in the new company's Virtual Private Cloud (VPC) overlap with your data center IP space.
What should you do to enable connectivity and make sure that there are no routing conflicts when connectivity is established?
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A. B. C. D.A.
In this scenario, the objective is to integrate the newly acquired company's existing Google Cloud environment with the existing data center without any routing conflicts when connectivity is established. However, it was found that some of the RFC 1918 IP ranges being used in the new company's VPC overlap with the IP space in the data center. To ensure connectivity and avoid routing conflicts, the best approach is to create a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply new IP addresses so that there is no overlapping IP space. This approach is provided in option A.
Option A: Create a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply new IP addresses so there is no overlapping IP space.
Explanation: A Cloud VPN connection provides a secure and reliable connection between the VPC and the data center. By creating a Cloud VPN connection, the VPC and data center can communicate with each other without any security concerns. The Cloud Router is used to manage and distribute routes between the VPC and the data center. By creating a Cloud Router, the routes are optimized, and routing conflicts are avoided. Applying new IP addresses to the VPC will eliminate any overlapping IP space, ensuring that there are no routing conflicts.
Option B: Create a Cloud VPN connection from the new VPC to the data center, and create a Cloud NAT instance to perform NAT on the overlapping IP space.
Explanation: This option suggests using a Cloud NAT instance to perform NAT on the overlapping IP space. NAT translates IP addresses in one network into IP addresses of another network. However, this option does not solve the problem of overlapping IP spaces. The Cloud NAT instance can translate the IP address, but the overlapping IP space remains a problem.
Option C: Create a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply a custom route advertisement to block the overlapping IP space.
Explanation: This option suggests using a custom route advertisement to block the overlapping IP space. While this approach can eliminate the problem of overlapping IP spaces, it is not the best approach. Blocking the overlapping IP space can cause connectivity issues between the VPC and the data center.
Option D: Create a Cloud VPN connection from the new VPC to the data center, and apply a firewall rule that blocks the overlapping IP space.
Explanation: This option suggests applying a firewall rule to block the overlapping IP space. However, this approach is not recommended because blocking the IP space can cause connectivity issues. A better approach is to use a Cloud Router to manage and distribute routes between the VPC and data center and apply new IP addresses to the VPC to eliminate any overlapping IP spaces.
In summary, the best approach to integrate the new company's Google Cloud environment with the data center without any routing conflicts is to create a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply new IP addresses to the VPC so that there is no overlapping IP space.